Choi & Hart

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Choi & Hart

by rd169 » Wed Sep 02, 2009 10:47 am
Choi: All other factors being equal, children whose parents doctorates are more like to earn a doctorate than children whose parents did not earn doctorates.

Hart: But consider this: Over 70 percent of all doctorates holders do not have a parent that holds a doctorate.

Which of the following is the most accurate evaluation of Hart's reply?

(A) It establishes that Choi's claim is an exaggeration.
(B) If true, it effectively demonstrates that Choi's claim cannot be accurate.
(C) It is consistent with Choi's claim.
(D) It provides alternative reasons for accepting Choi's claim.
(E) It mistakes what is necessary for an event with what is sufficient to determine that the event will occur.

Source: Kap 800
Please justify your choice.

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IMO E

by enniguy » Wed Sep 02, 2009 5:26 pm
IMO
B is a trap and E is the answer.
I am not at all sure though. Please post the OA.

E - 70% figure is not sufficient to disprove Choi's claim although such a probability will be necessary to prove Choi's claim.

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by rd169 » Wed Sep 02, 2009 8:52 pm
OA is surprisinglyC

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by enniguy » Wed Sep 02, 2009 9:58 pm
rd169 wrote:OA is surprisinglyC
I checked the book. C is indeed the answer. The explanation in the book is sufficient enough to support the answer but I dont a***e with the assumptions made. The book's explanation goes something like this:
The 70% doctorates can themselves have a good probability of having children who are doctorates. Hence, Hart's argument doesn't actually contradict with Choi's. To easily understand you can presume something like, Hart is talking about your parent's generation and Choi about your generation.

I don't agree with the assumption in the explanation though.

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by joseph32 » Sun May 15, 2016 9:24 pm
I'm going with E. No confidence on my answer. Can anyone tell OA?